NIST SRM 1568b Certificate of Analysis UPDATE

Dear NIST Standard Reference Material Customer:

This letter is to notify the users and purchasers of NIST SRM 1568b Rice Flour of the revised Certificate of Analysis (COA) dated 22 June 2021.  This revision includes the removal of the certified value for sodium due to inhomogeneity and updates to the uncertainty statements and expiration date.  The revised COA also includes editorial changes.

Please replace your existing SRM 1568b COA with the revised certificate that is available on the NIST SRM website at https://www.nist.gov/srm. 

Access the revised certificate directly by clicking the button provided.